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Test & Measurement
How to Build a Class-D Power Amp
Learn how to build your own Class D power amplifier—one of the most efficient ways to listen to music.
August 29, 2018
A Simple, Compact Power Supply for Analog and Mixed-Signal Systems
This project demonstrates and discusses the performance and functionality of an inductorless ±5 V power-supply circuit.
June 18, 2018
Build Your Own Negative Voltage Generator
Everyone needs a negative voltage rail eventually, but most only have a single rail supply. This project will show you how to build a negative voltage generator that runs off a single rail...
June 07, 2018
Learn About ATmega328P Fuse Bits and How to Use Them with an External Crystal Oscillator
This project introduces ATmega328P fuse bits and shows how to set them to use an external 16 MHz crystal oscillator.
August 03, 2017
Charles R. Hampton
C-BISCUIT: Layout and Assembly for the Robot Control Board
We’ll discuss some important layout and manufacturing concepts as we look at the PCB for the Robot Control Board.
October 25, 2016
Build Your Own LED Saber—Assembly and Hilt Construction
In the final installment, we build our light-blade and assemble the electronics into the hilt.
October 21, 2016
Build Your Own LED Saber—Firmware, Microcontroller, and Testing
In part 3, we compile the firmware and build the controller at the heart of the Saber, then do initial testing and diagnostics.
October 20, 2016
Build Your Own LED Saber—Audio and Power Systems
In part 2 of the LED saber project, we'll assemble the power and audio systems.
October 19, 2016
How to Build the Brightest LED Saber in the World
The brightest blade in the world. Fluid sound effects generated in real time. Any colour, changeable on the fly. If you want to know what it feels like to hold a Lightsaber, this project is the...
October 18, 2016
C-BISCUIT: Schematic Design for the RCB—Power, Stepper
We’ll continue our discussion of the C-BISCUIT demo bot by looking at portions of the RCB schematic that weren’t covered in the previous article....
October 07, 2016
C-BISCUIT: Schematic Design for the RCB—Microcontroller, Motor Controller
In this article we’ll take a close look at two sections of the custom-designed control board for the C-BISCUIT demo bot.
September 21, 2016
C-BISCUIT: Robot System Architecture
The C-BISCUIT saga continues as we combine the various system components into a demo bot.
September 08, 2016
Building an RC Robot Using a Wheelchair Base
This two-part project will begin by showing you how to create a robot base from a used electric wheelchair. Part 1 creates a simple robot platform for use with remote control. Part 2 will...
July 06, 2016
AC/DC: Battery Power Conversion for AC Speakers (Part 1)
This project details the process by which AC-powered speaker sets can typically be converted to battery power. I'll detail my own projects and provide advice for converting almost any set of...
June 08, 2016
Use a DC Motor to Power LED Headlights on a Longboard
Build a generator-powered LED headlight for a longboard for very cheap.
April 20, 2016
Build Programmable Time-based Switches Using a Real Time Clock
Use DS3231M RTC alarm functions to make programmable, time-based, switches to power devices on and off at precise times.
April 07, 2016
Build a Solar Battery Charger For Ni-MH Batteries
Build a simple solar powered battery charger for Ni-MH batteries.
March 16, 2016
C-BISCUIT Power: Crowbar Protection Circuit for 5V Regulator
Over-voltage and over-current protection circuit for use with the C-BISCUIT platform's main computer, the Wandboard.
March 09, 2016
Create Your Own Battery Backup Power Supplies
In this project, Jason Poel Smith builds a battery backup system that you can use for small electronics to make sure that they never lose power....
February 22, 2016
Jason Poel Smith
How to Eliminate Ground Loops with Signal Isolation
This project explains how to isolate signals to eliminate ground loops in electronic systems.
January 29, 2016
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